CONCRETE VIBRATOR FOR SALE

Concrete vibrator is also known as concrete vibrating poker, it is the most common machine used in building construction. Hiking machinery is a professional supplier of concrete vibrating tools, providing high quality concrete vibrator products to worldwide customers. At present,  hiking mainly supplies cordless concrete vibrator and gasoline concrete vibrator in to meet the different needs of global customers.

1. Lzb-3500 cordless concrete vibrator is a portable lithium-ion tool newly launched by our company in 2021. Compared with the traditional concrete poker it is lighter in weight, more convenient to carry and less noisy. It can effectively reduce the labor intensity of concrete construction workers during construction. Compared to other types of electric concrete vibrator, lzb-3500 does not need to be plugged in, it can prevent the risk of electric shock to the construction workers. The lzb-3500 vibrator is equipped with a 21v high-capacity lithium battery, which can last for more than 90 minutes on a single battery. The machine is equipped with a universal charger, charging voltage of 100v-230v, can be used in most countries around the world.
2. Pocket-100 lithium vibrating plate is the latest portable concrete vibrating plate launched by hiking machinery. This tool is powered by a high speed brushless motor and has a very good vibration effect. It is widely used in various concrete slab construction, which can improve the surface finish of concrete and reduce the occurrence of concrete slab cracks. Compared with other plug-in concrete vibrating plate, the pocket-100 vibrating plate is very easy to carry, and can be used in a wide range of small concrete slab construction to improve the efficiency and quality of construction.
3. Ybz-250 gasoline concrete vibrator adopts 4.8hp 4-stroke engine with plenty of power, equipped with 3m long vibrating rod can be used in deeper concrete.

After mixing, transporting and pouring the concrete contains air bubbles formed by the entrained air. The purpose of using the concrete vibrator is to discharge the air bubbles in the concrete, reduce the pore space, so that the concrete is dense, to ensure the quality of the structure. The practice has proved that the number of trapped air is related to the ease of concrete. Therefore, the low concrete collapse degree than the high concrete collapse degree need more vibrating compact.

Concrete that does not use concrete vibrators will contain a large number of pores, and the following are the hazards of concrete with pores:

1. The air contained in the concrete will form pores, and the pores will reduce the strength of the concrete. For every 1% increase in porosity, the strength of concrete will be reduced by 5%.
2. Pore space will increase the permeability, thereby reducing the durability of concrete. If the concrete is permeable by the formation of pores, the concrete will not be waterproof, thus reducing the ability to resist water erosion, and the exposed surface will be severely weathered, and moisture and air will be more easily accessible to the steel reinforcement resulting in corrosion of the steel.
3. Pore space can cause defective concrete appearance, such as ” Honeycomb “, bubbles and other phenomena.
4. Therefore, it is very important to use the concrete vibrator to vibrate the concrete. The use of concrete vibrator to vibrate the concrete fully, can make the air retained in the internal concrete discharge, concrete aggregate particles more closely together, so that the concrete to achieve a dense, strong, durable, no surface “Honeycomb”, bubbles, smooth as a mirror, and has resistance to permeability.

Concrete truss screed or vibrating power screed can be used for concrete pouring of bridge deck pavement, square pavement, airstrip, etc. Vibrating plate can be used for concrete pouring of t-beam, etc. Concrete pouring of walls, columns, etc. Can be selected from the inserted concrete vibrator. That is commonly known as concrete vibrating poker. Concrete poker is widely used, its advantage is easy to carry, directly in the concrete, and can be very quickly moved from one place to another. The concrete vibrator generally has a diameter of 25mm to 75mm, but also in the diameter of 100 ~ 150mm between the large vibrator. This depends on the size of the project to choose. Most reinforced concrete can be pounded with 25mm to 75mm bars. The following table provides the characteristics and applications of vibrating bars for reference.

1. Insert the vibrator in a staggered manner to ensure that every point of the concrete is vibrated. For example: The radius of action of the vibrator is 200mm, the insertion distance should be 300mm.
2. Insert the concrete vibrator quickly and let it sink into the bottom of the concrete layer by its own weight asap. If the construction operation is slow, the upper part of the concrete layer will vibrate first, which will make it difficult to exhaust the air trapped in the lower part in the concrete layer.
3. Slowly pull out the concrete vibrator, this will ensure that the pores caused by the vibrator are sealed up.if the vibrator is pulled out fast, the pores caused by the vibrator will leave holes in the finished concrete.
4. Avoid the concrete vibrator touching the surface of the formwork, if it is in contact with the formwork, it will easily cause damage to the surface of the formwork and will leave marks on the finished concrete surface.
5. Avoid the concrete vibrator touching the reinforcement, the force generated by the vibrating reinforcement will be transmitted to the hardened part of the concrete, so that the adhesion will be affected.
6. When pouring concrete, avoid concrete pile up, if there is concrete pile up by mistake, concrete vibrator should not be inserted into the top of the pile up.  The vibrator should be inserted along the perimeter of the pile to level the pile. This is to avoid pushing the concrete with the concrete vibrator to avoid segregation.
7. Make sure that the vibrator is inserted about 100mm into the previous layer so that the layers of concrete are tightly bound together and the floating slurry at the top of the next layer is mixed with the concrete at the bottom of the top layer.
8. The vibrating rod should be fully inserted into the concrete to prevent the vibrating rod bearings from heating up.

How long to vibrate the concrete is a matter of experience. This is related to the compatibility of the concrete and the type & size of the vibrator. General pounding time with a pounding bar in about 5 to 15 seconds or so. According to experience, for the collapse of 25 ~ 75mm concrete, the general pounding time of about 10 seconds.

1. After the air bubbles run to the surface of the concrete, stop bubbling, indicating that the concrete has been sufficiently compacted by the vibrating.
2. A layer of cement paste appears on the surface of concrete, which means that the concrete has been sufficiently vibrated and compacted.
3. When the pounding rod is inserted into the concrete, the sound frequency will be reduced, and when the sound becomes high and stable, it means that there is no trapped air in the concrete, and the concrete has been fully compacted by pounding.

Vibrators used on construction sites are classified according to the principle of vibration generation, there are two types of eccentric type and planetary type. Their vibrating structures and working principles are as follows:

Principle of eccentric concrete vibrator – it uses a rotating shaft with eccentric mass which is installed in the center of the vibrating rod, and the centrifugal force generated when rotating at high speed is transmitted to the vibrating rod housing through the bearing, thus causing the vibrating rod to produce circular vibration.

Principle of planetary vibrator – it is the use of a hollow shaft in the vibrating rod, when it rotates, the conical part of its lower pendant end rolls along the conical surface inside the rod shell, thus forming the planetary motion of the rolling body to drive the rod body to produce circular vibration.

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